Concrete-form anchorage.



J. W. JOHNSTON.

CONCRETE FORM ANCHORAGE.

APPLICATION FILED MAY a, 1915.

1,176,903. Patented Mar. 28,1916.

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AWAY/AV %Hneoom mos JAMES W. JOHNSTON, OF SENECA FALLS, NEW YORK.

CONCRETE-FORM ANCHORAGE.

Specification of Letters Patent.

Patented Mar. 28, 1916.

. Application filedMay 8, 1915. Serial No. 26,877.

To all whom z't may camera:

Be it known that I, JAMES W. J oHNsTo a citizen of the United States ofAmerica,

residing at Seneca Falls, in the County of- Seneca and State of NewYork, have in- Vented certain new and useful Improvements inConcret'e-Form Anchorage, ,of which the following is a specification,reference being had' therein to the accompanyng drawing. This inventionrelates to a concrete form anchorage and has for its prncipal object theproduction of a simple'and eflicient means for positively retaining theconcrete form in its correct set up position while the concrete is beingpouredtherein and while the same is becoming hard. Another object ofthis invention is the production of a concrete form anchorage which isso formed as to becarried within the inner portons of the pouredconcrete after the same has become hard thereby forming a reinforcementfor the concrete structure.

IA still further object of this invention is the production of aconcrete form `'anchor- 'age which is first set up before the concreteis poured into the form and which is then embedded in the concrete forforming a reinforcement therefor, the connecting portions whichngagetheform being adapted to be removed so as to allow the form to bedetachable when necessary. i

lrViththese and other objects in View, this invention consists *ofcertain novel combinations, constructions, and arrangements of parts aswill be hereinafter fully described and claimed.

In the accompanying drawing: Figure 1 is an elevation of a plurality ofthe form anchors, illustrating the mannerin which the same are used. Fig. 2 is a detailed perspective View of the anchor plate, illustratingthe manner in which the anchor cable engages the same, Fig. 3 is adetaled per-e spective View of the anchor rod or frane, showing theanchor cable connected thereto. Fig. 4 is a. side elevation of a bolt,illustrating the manner in which the anchor plate is carried thereby,the anchor plate being shown in section. F ig. 5 is a frontele- Vationof the anchor plate mounted upon a bolt.

Referring to the accompanying drawing by numerals it will be seen thatthe anchor frame is formed of a single rod or strand so,

'wings 12 extend in as to form parallel side portions 1 which convergeat their lower ends as clisclosed at 2, to form the pointecl lower end3. The upper ends of .the side portions l are bent inwardly as shown at4 to form the loop 5 which extends into and between the parallel arms orsicles 1 as clearly shown in Fig. 3. When in operation a laver ofconcrete 6 s first poured and at this time a number of the anchor framesmay be partially embedded in this concrete 6 as shown in Fig. 1. Theupper ends however of the frame each pro ect for a considerable distanceabove the upper portions of the concrete so as to allow free access tobe had thereto. The wooden forms 7 are thenset up and a number of bolts8 may be passed through the forms at any desired height or distance. Theanchor plates are then positioned upon the bolts for purposes to behereinafter set forth. Each anchor plate comprises a body 9 having acentral opening 10 through which one of the bolts 8 may pass for thepurpose of supporting the anchor plate. A plurality of rearwardlyextending wings ll are formecl upon the body 9 while the locking thesame plane as the body 9. The nut 13 may then be threaded upon therespective bolt until thesame engages the body 9. At this time thelooking wings 12 may be bent forwardly so as to extend in parallelspaced relation relative to each other and overhang the side portions ofthe nut 13. In this'manner it will be seen that the nut 13 will bepositively locked in a set position upon the bolt 8.

An anchor cable 14 is adapted to be used in connection with frame. Thiscable has a plurality of loops 15 extending from its upper end and theseloops are adapted to be passed about the rear portions of the body 9 ofthe anchor plate. Since the wings ll extend rearwardly they will preventthe loops from accidentally slipping over the side portions of theanchor plate thereby freeing the anchor plate. As it is now connected tothe anchor plate however, the cable will be-positively retained inposition while the forward ends of the looking wings 12 fitting betweenthe loops 15 as shown in Fig. 2, will hold the loops in spaced relationand will resist any tenclency of the anchor plate to have independentrotation upon the bolt. The lower end of the anchor cable 14 is woundaround the loop 5 of the anchor frame in any suiteach anchor plate andable manner as disclosed at 16 in Fig 3. This cable when the same isattached to both the anchor plate and the iframe will be Very taut asshown in Fig. 1 and therefore the -'orms 7 will be retained in thercorrect posltions. The concrete may then be poured into the form so asto fill the same thereby engaged and turned so as to rotate the bolt andcause the ?same to disengage the particular nut carried thereby. As soonas the bolts have been removed, the forms may then be removed from engagement with the set concrete while the anchor plate, cable, andframewill remain within the interior of the concrete body. Therefore, whilethe anchor will form a very etficient reinforcement for the concreteform, the outer surface of the concrete form will be comparativelysmooth as none of the portions of the device will project through oreven to the outer surface of the concrete structur It is of courseobvious that any shaped form may be used in connection with this deviceas it is not intended to limit the use thereof to the specific formshown'in the accompanyng drawing.

From the foregoing description it will be seen that a very clurable andefiicient anchor has been provided for concrete forms which may be Veryreadily set up so as to retain the form in its correct position andprevent the same from bulgng or springing when the concrete is beingpoured thereinto and which will form an eficient reinforcing member forthe concrete, after the form has been removed. e

What I claim is: l. A concrete form anchorage comprising a cable, ananchor frame carried by said cable. an anchor plate carried by saidcable and adapted to be detachably connected to a form wall, said framebeing adapted to be first embedded in cement whereby the form wall' maybe'entirely filled with concrete, said cable, plate, and frameconstituting a reinforcement for the concrete structure,

after the form has been removed.

2. In a device of the class described, the combination of an anchorcable, means car ried by one end of said cable for detachably retaininga concrete form in a set up position, means carried by the opposite endof said cable for engaging a supporting element for holding the cabletaut, said cable and said means being adaptecl to be embedded in theconcrete for forming a reinforcing element therefor.

3, In a device of the class' described, the combinaton of an anchorframe, said iframe 'plate having a body with a central opening,rearwardly extendng wings formed upon said body, a bolt extendingthrough the opening formed in said body, said bolt being adapted to passthrough a concrete form, "a nut carred by the inner end of said bolt andbearing upon said body, looking wings formed upon said body andeXtending in parallel spaced relation to each other so as to form a lockfor said nut, an anchor cable extending around said body, saidrearwardly extending wings constituting means for preventing thedisplacement "of said cable, means for anchoring the lower end of saidcable Whereby a concrete form will be held in its correctposition,saidp1ate, cable', and means being adapted to be embedded incement for forming a reinforcement therefor, said bolt being adapted tobe removed from engagement with said nut, when the concrete has becomeset, Whereby the form may be removed. V

5. In a. device of the class described, the combination of an` anchorframe, said anchor frame formed from a single strand of metal so as toprovide parallel side por tions, said side p'ortions provided with anintegral loop eXtending therebetween', the opposite end of said side'portions terminating in a pointed lower structure whereby 'the framemay be easily forced into an 1nclosing plastic medium, an anchor cableattached tosad loop, means engagng the opposte end of said anchor cablefor retaining the same in detachable engagement 'with a concrete formwhereby said form' may be` retained in its correct position while theconcrete is setting, said means being adapt'ed to release said form`When necessary, and said cable, frame,' and means constituting areinforcement for the concrete structure when set. i i

In testimony whereof `I hereunto aflix my signature in presence of twowitnesses.

JAMES W. VJOHNSTON. i

` Witnesses: i

CI-IARLES F. HAMMOND, 'LE A T. BRADLEY.

copies ot this patent may be obtaincd for 'five cents each, byaddrcssing the fcon missioncr ot Patents t Washington, CJ

